Draft appliance.



PATENTED JULY 5, 1904.

J. R. KELLY; DRAFT APPIl-LAIICE.

APPLIUATION FILED D120. 17, 1903.

NO MODEL.

, anvil/44 4701 M 3 UNITED STATES Patented July 5, 1904.

PATENT OFFI E.

DRAFT APPLIANCE.

SPECIFICATION forming part of Letters Patent No. 764,295, dated July 5,1904.

Application filed December 17, 1903. Serial No. 185.564. (No model.)

To all whom it may concern:

Be it known that I, JOSHUA R. KELLY, a citizen of the United States,residing at ashington, in the District of Columbia, have invented newand useful Improvements in Draft Appliances, of which the following is aspecification.

My invention pertains to conductors for smoke and other products ofcombustion; and it contemplates theprovision of means calculated toeffectually prevent the strong draft in a high uptake or other conductorfrom cutting off the draft in a stove or other furmace, and this in suchmanner that ample draft is furnished to support proper combustion in thestove or other furnace.

WVith the foregoing in mind the invention will be fully understood fromthe following description and claims when taken in connec tion with theaccompanying drawings, forming part of this specification, in whichFigure 1 is a vertical section with my novel device applied. Fig. 2 isan enlarged perspective view of the device removed. Fig. 3 is anenlarged detail section taken on line 3 3 of Fig. 1. Fig. 4 is anelevation with a plurality of my novel devices applied.

Referring by letter to the said drawings, and more particularly to Figs.1 to 3 thereof, A is a conductor for smoke and other prodnets ofcombustion in the form of an uptake or vertical shaft. B is a pipeconnected to the conductor A, which may be properly denominated the mainconductor and designed to be connected to one or a plurality offurnaces, which may be stoves, steam-boiler furnaces, broilers, or thelike, and C is my novel device for preventing the strong draft in themain conductor from interfering with ample combustion in the furnace orfurnaces. In

the present and preferred embodiment of my invention the novel device Ccomprises a do. Hector (1., arranged in the main conductor A in linewith the branch pipe B and having a base-flange 5 connected to theconductor A below the pipe B and also having side walls 0, which areprovided with flanges (Z, also connected to the conductor A, as shown inFig. 1, a wall c extending inwardly from the upper end of the deflectora and having upturned flanges f and also having apertures g at pointsintermediate of its middle andiends and an air-induction conduit hdisposed at the inner side of the deflector u. and riveted or otherwisedirectly connected thereto and tapered from its lower end to its upperend, which latterextends through the top wall 0, as best shown in Fig.2.

All of the parts of my novel device are preferably formed of sheetmetal, although they may be obviously formed of other material in one ormore pieces without involving departure from the scope of my invention.

In virtue of my novel device being arranged, as described, relative tothe main conductor A and the furnace-pipe B, it will be observed thatthe deflector a will effectually prevent the exceedingly strong draftordinarily present in high smoke-pipes from rushing past the pipe B atright angles thereto, and thereby cuttingoff the draft necessary tosupport combustion in the furnace with which the pipe B is connected andforcing the smoke and other products of combustion back to the same. Itwill also be observed that in virtue of the induction-conduit it beingarranged,as described, relative to the deflector a and tapered from itslower to its upper end the force of the current of air will beamplified. on route through said conduit, so as to cause an entrainingaction upon the gases from the pipe B, with the result that ample draftis afforded to promote proper combustion in the furnace or furnacesconnected with the pipe B and carry off the smoke and other products ofcombustion from the same. The wall stiffens and strengthens the free endof the dcflectorqvith the result thatliability of said end being burnedaway in use is reduced to a mini mum. The apertures g of the said wall 0permit the draft to pass upwardly in suflicient volumes to aid insweeping the smoke and other products of combustion along the mainconductor.

In the arrangement illustrated in Fig. i the branch pipe B, connected tothe main conductor or uptake A, is connected in turn by pipes C with aplurality of stoves or other furnaces D. In the pipe B and opposite thepipes C my novel devices C are arranged after the manner illustrated bydotted lines. In other words, the said devices C are arrangedsubstantially horizontal, and the flanges b of the deflectors a areconnected to the pipe B at the sides of the pipes C remote from the mainconductor A. From this it follows that the devices C will prevent thestrong draft through the pipe B in the direction of the arrow fromcutting off or otherwise interfering with the draft of the furnaces andat the same time will assure the supply of ample draft to properlysupport combustion in and carry off smoke from the furnaces.

As before described, my novel devices may be used in connection with thesmoke-conduits of furnaces of all kinds. For instance, when it isdesired to connect a plurality of steamboiler furnaces with a singleuptake or smokepipe, as A, the devices C may be arranged, as shown inFig. 4, with reference to pipes C, connected to the steam -boilerfurnaces. When so arranged, the devices C will increase the steam-makingcapacity of the furnaces, notwithstanding the connection of saidfurnaces with the single smoke-pipe or uptake.

Notwithstanding the material advantages of my novel devices aspointedout in the foregoing it will be observed that the same are simpleand inexpensive in construction, are susceptible of being quickly andeasily installed,and are calculated to withstand the high heat to whichdevices placed in smoke-conduits are ordinarily subjected.

1 have entered into a detail description of the construction andrelative arrangement of the parts embraced in the present and preferredembodiment of my invention in order to impart a full, clear, and exactunderstanding of the same. I do not desire, however, to be understood asconfining myself to such specific construction and relative arrangementof parts, as such changes or modifications may be made in practice asclearly fall within the scope of my invention as claimed.

Having described my invention, what I claim, and desire to secure byLetters Patent,

1. The combination with a conduit having a lateral opening; of a devicearranged in the conduit, in line with the opening, and comprising adeflector fixed to the conduit, at one side of the opening, andpermanently inclined in a direction away from said opening, and anair-induction conduit disposed at the opposite side of the deflector,with reference to the opening.

2. The combination with a conduit having a lateral opening; of a devicearranged in the conduit, in line with the opening, and comprising adeflector fixed to the conduit, at one side of the opening, andpermanently inclined in a direction away from said opening, and means atthe free end of the deflector for causing an entraining action upon thegases from the opening.

3. The combination with a conduit having a lateral opening; of a devicearranged in the conduit, in line with the opening, and comprising adeflector connected to the conduit at one side of the opening, andinclined in a direction away from said opening and having an angularwall provided with one or more apertures, and an air-induction conduitarranged at the opposite side of the deflector, with reference to theopening, and extending through said angular wall.

4. The combination with a conduit having a lateral opening; of a devicearranged in the conduit, in line with the opening, and comprising adeflector connected to the conduit at one side of the opening andinclined in a direction away from said opening, and having anangularly-disposed wall on its free end extending therefrom in adirection away from the opening, and provided with one or moreapertures.

5. The combination with a conduit having a lateral opening; of a devicearranged in the conduit, in line with the opening, and comprising adeflector connected to the conduit at one side of the opening andinclined in a direction away from said opening, and having anangularly-disposed wall on its free end extending therefrom in adirection away from the opening and provided with one or moreforwardly-extending flanges, and one or more apertures.

6. The combination with a conduit having a lateral opening; of a devicearranged in the conduit, in line with the opening, and comprising adeflector connected to the conduit at one side of the opening andinclined in a direction away from said opening, and having anangularly-disposed wall on its free end provided with one or moreapertures, and an air-induction conduit disposedat the opposite side ofthe deflector, with reference to the opening, tapered from its receivingend to its discharge end and extending through the said wall.

7. The combination with a conduit having a lateral opening; of a devicearranged in the conduit, in line with the opening, and comprising adeflector connected to the conduit, at one side of the opening, andhaving at its free end an angularly-dispoed wall which extends in adirection away from the opening and is provided with one or moreapertures.

8. The combination with a conduit having a lateral opening; of a devicearranged in the conduit, in line with the opening, and comprising adeflector connected to the conduit at one side of the opening, andhaving at its free end an angularly-disposed wall which extends in adirection away from the opening, and is provided With one or moreapertures, and an air-induction conduit disposed at the opposite I sideof the deflector, with reference to the lateral opening, tapered fromits receiving end to its discharge end, and extending through the saidWall of the deflector.

Intestimony whereof I have hereunto set my hand in presence of twosubscribing Wit 5 nesses.

JOSHUA R. KELLY.

v Witnesses:

THOMAS E. TURPIN, N. (J. HEALY.

